XML 181 R165.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Related party balances and transactions - Controlling group (Details) - $ / shares |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 30, 2017 | Jun. 22, 2017 | May 23, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Mar. 08, 2016 | Dec. 31, 2015
Related party balances and transactions |  |  |  |  |  |  |
Par value (in argentine peso per share) |  |  |  | $ 1 | $ 1 |  | $ 1
Sofora |  |  |  |  |  |  |
Related party balances and transactions |  |  |  |  |  |  |
Par value (in argentine peso per share) |  |  |  | $ 1 |  |  |
Number of votes per share |  |  |  | 1 |  |  |
Fintech | Sofora |  |  |  |  |  |  |
Related party balances and transactions |  |  |  |  |  |  |
Acquisition percentage |  |  |  |  |  | 51.00% |
Telecom Argentina | Nortel |  |  |  |  |  |  |
Related party balances and transactions |  |  |  |  |  |  |
Ownership percentage by parent | 54.74% |  |  |  |  |  |
Ownership percentage after treasury shares acquisition | 55.60% |  |  |  |  |  |
Telecom Argentina | Nortel | Class A Preferred shares |  |  |  |  |  |  |
Related party balances and transactions |  |  |  |  |  |  |
Ownership percentage by parent | 51.00% |  |  |  |  |  |
Telecom Argentina | Nortel | Class B Preferred shares |  |  |  |  |  |  |
Related party balances and transactions |  |  |  |  |  |  |
Ownership percentage by parent | 3.74% |  |  |  |  |  |
Equity interest in preferred shares (as a percent) | 7.64% |  |  |  |  |  |
Telecom Argentina | Fintech |  |  |  |  |  |  |
Related party balances and transactions |  |  |  |  |  |  |
Ownership percentage by parent |  |  |  | 39.50% |  |  |
Nortel | Sofora |  |  |  |  |  |  |
Related party balances and transactions |  |  |  |  |  |  |
Ownership percentage by parent | 78.38% |  |  |  |  |  |
Sofora | Fintech |  |  |  |  |  |  |
Related party balances and transactions |  |  |  |  |  |  |
Ownership percentage by parent |  | 15.00% | 17.00% |  |  |  |

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_79_a_iii&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_ParValuePerShare
Namespace Prefix: | ifrs-full_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2017-01-01 -Paragraph B64 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2017-03-01&anchor=para_B64_c&doctype=Appendix&seq=2 -URIDate 2017-03-09 + Details
Name: | ifrs-full_PercentageOfVotingEquityInterestsAcquired
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2017-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_17_b_iii&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2017-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_16_b_iii&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph 19B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_19B_c&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInSubsidiary
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of votes per share. + References No definition available. + Details
Name: | teo_NumberOfVotesPerShare
Namespace Prefix: | teo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The proportion of equity interest in preferred shares. + References No definition available. + Details
Name: | teo_ProportionOfEquityInterestInPreferredShares
Namespace Prefix: | teo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The proportion of ownership interest in subsidiary after treasury shares acquisition. + References No definition available. + Details
Name: | teo_ProportionOfOwnershipInterestInSubsidiaryAfterTreasurySharesAcquisition
Namespace Prefix: | teo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=teo_SoforaTelecomunicacionesS.a.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=teo_FintechTelecomLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_BusinessCombinationsAxis=teo_SoforaTelecomunicacionesS.a.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=teo_TelecomArgentinaS.a.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=teo_NortelInversoraS.a.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=teo_ClassaPreferredSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfShareCapitalAxis=teo_ClassBPreferredSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=teo_NortelInversoraS.a.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=teo_SoforaTelecomunicacionesS.a.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |